From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262062AbUGIBQz (ORCPT ); Thu, 8 Jul 2004 21:16:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262114AbUGIBQz (ORCPT ); Thu, 8 Jul 2004 21:16:55 -0400 Received: from modemcable053.53-202-24.mc.videotron.ca ([24.202.53.53]:57987 "EHLO omega3.sco.ath.cx") by vger.kernel.org with ESMTP id S262062AbUGIBQw (ORCPT ); Thu, 8 Jul 2004 21:16:52 -0400 Message-ID: <40EDF209.70707@yahoo.ca> Date: Thu, 08 Jul 2004 21:16:57 -0400 From: Jonathan Filiatrault User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040528 X-Accept-Language: en-ca, fr-ca MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Cc: linux-usb-devel@lists.sourceforge.net Subject: [2.6.7] Ehci controller interrupts like crazy on nforce2 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Here it is: another nforce2 hardware bug. The ehci controller seems to send a massive number of interrupts to the kernel (264379 per second). This uses about 5 to 10% of the cpu. This shows up in top in the "hi"(hard interrupts) indicator. Nothing unusual shows up in the kernel log. My system has an Asus A7N8X Nforce2 Board with an Athlon XP 2800+ mounted on it. [joe@omega3:~]$ cat /proc/interrupts ; sleep 1; cat /proc/interrupts CPU0 0: 583513 XT-PIC timer 1: 1279 IO-APIC-edge i8042 7: 137293 IO-APIC-edge parport0 8: 0 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 14: 41463 IO-APIC-edge ide0 15: 23 IO-APIC-edge ide1 17: 9 IO-APIC-level EMU10K1 18: 18584 IO-APIC-level eth0 20: 121541873 IO-APIC-level ehci_hcd 21: 0 IO-APIC-level ohci_hcd 22: 0 IO-APIC-level ohci_hcd NMI: 0 LOC: 583348 ERR: 0 MIS: 0 CPU0 0: 584760 XT-PIC timer 1: 1280 IO-APIC-edge i8042 7: 137578 IO-APIC-edge parport0 8: 0 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 14: 41505 IO-APIC-edge ide0 15: 23 IO-APIC-edge ide1 17: 9 IO-APIC-level EMU10K1 18: 18641 IO-APIC-level eth0 20: 121806252 IO-APIC-level ehci_hcd 21: 0 IO-APIC-level ohci_hcd 22: 0 IO-APIC-level ohci_hcd NMI: 0 LOC: 584595 ERR: 0 MIS: 0 [joe@omega3:~]$ Any help or random thougths are welcome. Happy Hacking, Joe